Days Set Up
Monday - Friday
Analytic Time

1 - 4 days

MiChart Code
LDH (Lactate Dehydrogenase)
Soft Order Code

Test Updated:


LDH Isoenzymes
Lactate Dehydrogenase Isoenzymes
Lactate Dehydrog Isoenzymes

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Find a Requisition

All specimens should be accompanied by a requisition.

Submitting Specimens

Learn about how to properly label and where to ship specimens.

Order Kits and Supplies

MLabs provides all the supplies necessary for the collection of specimens.

Test FAQ

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Test Overview

Test Methodology

Photometric Rate

Test Usage

Evaluation of myocardial infarction and liver disease.

Reference Range

LD Isoenzymes: I (fast band): 17.5 - 28.3%; II: 30.4 - 36.4%; III: 19.2 - 24.8%; IV: 9.6 - 15.6%l V (slow band): 5.5 - 12.7%. Total LD level is also reported.

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Specimen Requirements

Collection Onsite

Collect specimen in a red top or SST tube.

Collection Offsite

Collect specimen in a red top or SST tube. Centrifuge and aliquot serum into a plastic vial. Store and transport at room temperature. Specimen cannot be refrigerated >48 hours or frozen.

Yellow Top Tube
Normal Volume
2 mL serum
Minimum Volume
0.75 mL serum

Billing Information

CPT Code
83615 LDH, 83625 Isoenzymes
Pro Fee Code

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Our High Standard

Quality that sets us apart

As the reference laboratory division of Michigan Medicine's Department of Pathology, MLabs shares the institution's commitment to applying established quality principles to clinical laboratory testing. Like other large organizations in complex, consequential fields, we rely on an established approach to monitor quality throughout the testing process.